COURTHOUSE — A Montgomery Township man has admitted to being a major player in a multi-county cocaine trafficking ring, essentially conceding to possessing, delivering and conspiring with others to deliver the drug.

Anthony Dennis Sr., 41, of the 100 block of Thames Drive, pleaded guilty in Montgomery County Court on Friday to multiple charges of corrupt organizations, possession with intent to deliver cocaine, dealing in unlawful proceeds, criminal use of a communication facility and conspiracy in connection with incidents that occurred between November 2008 and April 2011. Dennis pleaded guilty to a total of 103 counts of drug-related charges.

Dennis, who authorities say operated the “Heads Up” barbershop in the 900 block of Upper Gulph Road near Wayne, Chester County, admitted his guilt shortly before Judge William R. Carpenter was to select a jury for Dennis’ trial.

Dennis’ open plea means there are no deals with prosecutors regarding his potential sentence. Dennis, who remains free on 10 percent of $1 million bail pending sentencing, potentially faces decades in state prison on the charges.

“He was one of the main targets of this operation, operating a sophisticated drug organization throughout southeastern Pennsylvania, Philadelphia, Montgomery and Chester counties. He was one of the leaders,” alleged Assistant District Attorney Jason Whalley, who is handling the case along with prosecutor Tonya Lupinacci.

Dennis’ personal trainer brother, Michael, 36, of Earl Street, Philadelphia, another alleged target of the investigation, has opted to go to trial with two alleged drug customers of the organization on various drug-related charges. Carpenter selected a jury for that trial, which will begin on Monday.

The Dennis brothers were arrested as part of an investigation dubbed “Operation Heads Up.”

Michael Dennis was charged as an alleged conspirator in the cocaine trafficking ring.

Simultaneous raids by 72 law enforcement officers at 21 locations in the three counties on May 18, 2011, resulted in the seizure of four pounds of cocaine with a street value of $204,800, 14 vehicles, a 19-foot long fishing boat from a storage facility in Collegeville, more than $76,000 in cash and 12 firearms, authorities alleged.

A total of 27 people were charged in connection with their alleged involvement in the corrupt organization. Several others previously admitted their roles in the organization, either as sellers, middlemen or customers and are serving jail terms or are awaiting sentencing.

The investigation began in November 2008 in Tredyffrin as township police and members of the Chester County High Intensity Drug Trafficking Areas Task Force investigated Anthony Dennis’ barbershop as an alleged hub of the cocaine trafficking operation.

Authorities alleged the Dennis brothers were engaged in the sale of large quantities of cocaine to various individuals including cocaine dealers in Montgomery County.

The arrests were the culmination of a wiretap investigation into the activities of those allegedly involved in the drug ring.